Description
1.5 Ton Merit Single-Stage System – Reliable Comfort with Free Installation
Looking for a reliable, energy-efficient way to keep your home comfortable all year long? The 1.5 Ton Merit Single-Stage System is the perfect choice. This complete central air conditioning system combines the trusted ML14KC1 air conditioner, ML180E furnace, and a horizontal R-454B evaporator coil to deliver consistent comfort, year-round efficiency, and peace of mind.
SEER2: 16.8
EER2: 14.2
With a SEER2 of 16.8 and an EER2 of 14.2, the 1.5 Ton Merit Single-Stage System helps you save on energy bills while delivering dependable performance. Moreover, every component works together seamlessly to provide quiet operation, long-lasting durability, and easy maintenance. Best of all, your purchase includes free professional installation, so you can enjoy comfort without any hassle.
Cool Comfort with the ML14KC1 Air Conditioner
The ML14KC1 keeps your home cool and comfortable, quietly. In addition, it is ENERGY STAR® certified and uses R-454B refrigerant, making it eco-friendly and cost-efficient. Its Quantum™ Coil and corrosion-resistant cabinet ensure long-lasting reliability. Furthermore, the single-stage compressor delivers steady cooling throughout every room.
Efficient Heating with the ML180E Furnace
Say goodbye to uneven heat! The ML180E furnace offers an 80% AFUE efficiency rating. Also, its Power Saver™ motor adjusts airflow to match your home’s needs. In addition, dual-fuel capability allows pairing with a heat pump for extra energy savings. Together, this furnace and the air conditioner provide reliable, whole-home comfort.
Durable Horizontal Coil
Meanwhile, the R-454B Dedicated Evaporator Coil improves heat transfer and boosts efficiency. It also includes a Refrigerant Detection System for added safety, giving you peace of mind while your system runs at peak performance.
Why Choose the 1.5 Ton Merit Single-Stage System?
This bundle delivers convenience, energy savings, and long-term reliability. It qualifies for federal tax credits and meets future 2025 refrigerant standards, making it a smart, affordable choice.
✅ Year-round comfort with a single, easy-to-manage system
✅ Energy-efficient with SEER2 16.8 and EER2 14.2
✅ Quiet operation, durable design, and low-maintenance performance
✅ Affordable bundle of air conditioner, furnace, and horizontal coil
✅ Free professional installation with your purchase
For homeowners who want even more precise temperature control, quieter operation, or maximum energy efficiency, our multi-stage and variable-speed systems offer advanced performance while building on the reliability of the Merit Single-Stage System.
Air Conditioner Overview
Model #: ML14KC1-018
Product Overview:
Merit® Series | ML14KC1 Air Conditioner – Affordable Cooling for Your Home
The Merit® Series ML14KC1 is an affordable air conditioner built for reliable and energy-efficient performance. Designed to work with the new 2025 Compliant Refrigerant, it is both future-ready and environmentally responsible. As a result, homeowners enjoy consistent comfort while minimizing their energy costs with a high-performance central air conditioning system.
Energy Efficiency & Performance
With a 14.30 SEER2 efficiency rating, this air conditioner meets or exceeds industry energy standards. In addition, it is ENERGY STAR® Certified, ensuring it complies with federal guidelines for energy efficiency. Eligible for the Federal Tax Credit under the Energy Efficient Home Improvement Credit (IRC Section 25C), this unit helps homeowners save money while reducing their environmental footprint. The high-efficiency outdoor coil improves heat transfer and reduces air resistance, making it a reliable option for air conditioning systems in residential homes. The single-stage compressor runs at full capacity as needed, providing dependable and consistent cooling for every room.
Quiet & Comfortable Operation
The ML14KC1 operates at sound levels as low as 73 dB, creating a peaceful indoor environment. Furthermore, the direct-drive, precision-balanced outdoor fan reduces noise while extending product longevity. Therefore, this air conditioner offers both comfort and quiet performance, perfect for modern heating and air conditioning units.
Craftsmanship & Reliability
Featuring the Quantum™ Coil made from proprietary aluminum alloy, this unit is engineered to withstand the harshest weather conditions. The heavy-gauge galvanized steel cabinet includes a louver coil guard, zinc-coated base, and baked-on powder finish to resist rust and corrosion. Additionally, the braze-free installation design ensures flexibility with 2025 compliant systems, while built-in drainage holes prevent moisture accumulation. Consequently, homeowners get a durable and long-lasting air conditioners units solution.
Safety & Sustainability
This air conditioner uses R-454B refrigerant, compliant with 2025 EPA lower-GWP standards. In addition, the built-in Refrigerant Detection System (RDS) ensures A2L safety compliance by detecting leaks, halting operation, and safely dispersing refrigerant. Therefore, users benefit from safe, efficient performance within their heating air conditioning system.
Affordable Cooling Bundle with Furnace and Horizontal Coil
For complete home climate control, pair the ML14KC1 with a compatible Lennox® furnace and horizontal coil. This bundle creates a fully integrated heating and cooling systems solution, providing efficient, year-round comfort and reliable performance for your home.
Key Benefits at a Glance
✅ Affordable air conditioner with 14.30 SEER2 efficiency
✅ ENERGY STAR® Certified and federal tax credit eligible
✅ Built to last with Quantum™ Coil and heavy-duty cabinet
✅ Quiet operation at sound levels as low as 73 dB
✅ Affordable cooling bundle with furnace and horizontal coil available
✅ Ideal complete home cooling and heating system
Product Specifications:
| Brand |
Lennox |
| Catalog Number |
25C86 |
| Model/Part Number |
ML14KC1-018-230 |
| Base Unit of Measure |
Unit(S) |
| Family |
ML14KC1 |
| Series |
Merit |
| Type |
Single-Stage Air Conditioner |
| Nominal Cooling Capacity |
1.5 Ton |
| Product Voltage |
208-230 VAC 1 Ph 60Hz |
| Product Width |
28.7 Inch |
| Product Height |
29.1 Inch |
| Compressor Type |
1 Stage |
| Number of Compressors |
1 Compressor |
| SEER2 |
Meets or exceeds 14.30 SEER2 |
| Gross Weight |
155.0 Lbs |
| Liquid Line OD |
3/8 Inch |
| Suction Line OD |
3/4 Inch |
| Energy Star Certified |
Yes |
| Refrigerant Type |
R-454B |
| Product Length |
28.7 Inch |
Furnace Overview
Model #: ML180UH045E36A
Order #: 81W21
Product Overview:
Merit® Series | ML180E Gas Furnace – Economical Heating with Power Saver™ Technology
The Merit® Series ML180E is an economical gas furnace designed for reliable comfort and efficient performance. With Lennox’s Power Saver™ constant torque motor, this furnace automatically adjusts airspeed based on demand. As a result, it operates more efficiently than standard motors while delivering consistent airflow throughout your home, making it a dependable solution for heating and air conditioning units.
Energy Efficiency & Performance
This furnace features an 80% AFUE efficiency rating, helping homeowners reduce energy costs while maintaining consistent comfort. Moreover, the Power Saver™ constant torque motor adjusts airflow to match demand, ensuring more efficient operation than traditional single-speed motors. When paired with a Lennox® heat pump, the dual-fuel capability allows the system to seamlessly switch between electricity and gas. Therefore, your heating and cooling systems provide both comfort and energy savings.
Quiet & Comfortable Operation
Thanks to the constant torque motor, airflow is smoother and quieter compared to conventional furnaces. In addition, the furnace ensures even heat distribution throughout your home, minimizing hot and cold spots. Consequently, it delivers reliable, ac and heating performance while keeping every room comfortable year-round.
Craftsmanship & Reliability
Constructed from high-quality steel, the ML180E furnace offers long-lasting durability. It is rigorously tested to endure years of consistent operation, regardless of environmental conditions. Furthermore, Lennox’s commitment to performance ensures your heating & ac system operates efficiently for years to come.
Safety & Sustainability
This furnace meets all industry safety standards for dependable operation. Additionally, dual-fuel capability reduces reliance on fossil fuels when paired with a Lennox® heat pump. As a result, homeowners benefit from a more environmentally friendly solution within their heating air conditioning system.
Affordable Heating & Cooling Bundle Option
For complete year-round comfort, pair the ML180E furnace with a compatible Lennox® air conditioner or heat pump. This bundle creates a fully integrated air conditioning units for homes and heating solution, providing energy-efficient performance in a single, reliable system.
Key Benefits at a Glance
✅ Economical gas furnace with 80% AFUE efficiency
✅ Power Saver™ motor for quieter, more efficient operation
✅ Dual-fuel capable for energy savings with a Lennox® heat pump
✅ Built with durable, high-quality steel
✅ Consistent, even heating for improved home comfort
✅ Affordable bundle option with air conditioner or heat pump available
Product Specifications:
| Brand |
Lennox |
| Catalog Number |
81W21 |
| Model/Part Number |
ML180UH045E36A |
| Base Unit of Measure |
Unit(S) |
| Family |
ML180E |
| Series |
Merit |
| Heating Capacity |
44000 Btuh |
| Heating Efficiency |
80% AFUE |
| Configuration |
Upflow/Horizontal |
| Blower Size |
3 Ton |
| Gas Stages |
1 Stage Heat |
| Blower Type |
Constant Torque |
| Product Voltage |
115 VAC 1 Ph 60 Hz |
| Product Depth |
27.75 Inch |
| Product Width |
14.5 Inch |
| Product Height |
33 Inch |
| Gross Weight |
111 lbs. |
| Type |
1-Stage Constant Torque Horizontal Gas Furnace |
| Energy Star Certified |
No |
California Residents Only
This furnace does not comply with the South Coast Air Quality Management District (SCAQMD) Rule 1111 or the San Joaquin Valley Air Pollution Control District (SJVAPCD) Rule 4905 NOx emission limit of 14 ng/J. It cannot be installed in areas regulated by the SCAQMD or SJVAPCD.
Horizontal Coil
Model #: CK40HT-30A-71
Order #: 25V08
Product Overview:
Merit® Series | R-454B Dedicated Evaporator Coil – Reliable, Efficient, and Future-Ready
The Merit® Series R-454B Dedicated Evaporator Coil is a horizontal, aluminum-cased coil designed for seamless use with the ML14KC1 Air Conditioner and other air conditioning systems that meet 2025 refrigerant requirements. Because it is built for durability and efficiency, it delivers steady performance while aligning with modern EPA and energy standards. As a result, homeowners gain long-lasting comfort and peace of mind.
Energy Efficiency & Performance
This coil is carefully engineered for compatibility with 2025 Compliant Refrigerant (R-454B). In addition, its efficiency rating supports the performance of central air conditioning systems that meet or exceed 14.30 SEER2. Since it is ENERGY STAR® Certified, it not only meets but also exceeds federal guidelines for energy efficiency. Moreover, it qualifies for the Federal Tax Credit under the Energy Efficient Home Improvement Credit (IRC Section 25C). Finally, the high-efficiency outdoor coil is built to enhance heat transfer while also reducing air resistance, making it ideal for hvac system upgrades.
Quiet & Comfortable Operation
When paired with ML14KC1 air conditioners units, the Merit® Series coil ensures quiet operation with sound levels as low as 73 dB. Furthermore, it uses a precision-balanced, direct-drive outdoor fan that reduces noise while extending the system’s lifespan. Consequently, homeowners enjoy steady comfort without unnecessary distractions.
Craftsmanship & Reliability
The coil includes the exclusive Lennox Quantum™ Coil, made with a specialized aluminum alloy tested to endure the harshest environments. Along with this, the cabinet features heavy-gauge galvanized steel, a louver coil guard, a zinc-coated base, and a baked-on powder finish to provide excellent corrosion resistance. In addition, the braze-free installation design allows for flexible placement in heating and cooling systems, especially those prepared for 2025 standards. Built-in drainage holes also prevent moisture buildup, which means greater long-term reliability for your ac heating setup.
Safety & Sustainability
This evaporator coil uses R-454B refrigerant, which is fully compliant with upcoming EPA low-GWP requirements. At the same time, the built-in Refrigerant Detection System (RDS) ensures A2L refrigerant safety compliance by automatically stopping operation and dispersing leaks when needed. Therefore, users gain an added layer of protection while enjoying efficient heating air conditioning performance.
Complete Cooling System Option
For the best results, pair the R-454B Dedicated Evaporator Coil with the Merit® Series ML14KC1 Air Conditioner. Together, they create a complete ac and heating solution that maximizes energy savings while keeping homes comfortable year-round. In addition, this setup ensures compliance with future refrigerant standards, making it a smart investment for homeowners upgrading their heating and air conditioning units.
Key Benefits at a Glance
✅ Horizontal, aluminum-cased evaporator coil compatible with 2025 refrigerants
✅ ENERGY STAR® Certified and eligible for federal tax credit
✅ Quantum™ Coil engineered for durability and performance
✅ Quiet operation when paired with ML14KC1 systems
✅ Flexible braze-free installation design
✅ Built-in Refrigerant Detection System for enhanced safety
✅ Future-ready with R-454B lower-GWP refrigerant compliance
Product Specifications:
| Brand |
Lennox |
| Catalog Number |
25V08 |
| Model/Part Number |
CK40HT-30A-71 |
| Base Unit of Measure |
Unit(S) |
| Family |
CK40HT |
| Configuration |
Horizontal |
| Nominal Cooling Capacity |
2.5 Ton |
| Metering Device |
TXV (R454B) |
| Product Depth |
21.5 Inch |
| Product Width |
31.5 Inch |
| Product Height |
14.5 Inch |
| Cased |
Cased |
| Material Type |
Aluminum |
| Type |
R-454B Dedicated Evaporator Coil |
| Color |
Lennox Gray |
| Gross Weight |
56 Lbs |
| Suction Line OD |
7/8 Inch |
| Liquid Line OD |
3/8 Inch |
| Refrigerant Type |
R-454B |
Documents
Air Conditioner Documents:
Installation Instructions
Furnace Documents:
Installation Instructions
Service & Application Notes
Horizontal Coil Documents:
Installation Instructions
